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Couplers

Couplers allow the pump to be extracted and then quickly returned to the tank with no need to drain it, often an expensive operation involving lengthy plant stoppages.
Perfect mating between flange and coupler is ensured on all units in the Zenit range by a rubber gasket.

Innovation

Zenit bottom couplers can have horizontal or vertical discharge in order to better adapt to the customer's needs. All couplers are designed to receive 2 guide pipes which can accompany the pump into its working position, preventing troublesome rotation.
What's more, a patented system simplifies pump release and reduces the mechanical stresses on the guide pipes, even after an extended period of time immersed in the wastewater.

Another special feature of the Zenit vertical couplers is that they are designed to keep the pump's intake port at the ideal height, with no need to create a step in the bottom of the tank.
They therefore provide a considerable savings in terms of time and the costs involved in the building of collection tanks as well as easy replacement in pre-existing plants.

Range

DAC-E

COUPLERS

The externalcoupler[DAC-E] consists of two parts: a fixed part for connection to the plant and a movable part connected to the pump by means of an optional threaded connecting pipe.
The two parts can be connected and disconnected without the aid of tools by means of hook operating on the lever principle.

Since this system remains above water level, it can be installed without draining the tank, often a complex, expensive process.

Technical characteristics

GAS 2" thread discharge connection

Fixed part in EN-GJL-250 cast iron, movable part in EN-GJS-600-3

Epoxy-vinyl paint

NBR rubber gaskets

Full free passage

Fixing to tank wall by means of DN50 PN10 flange or 2" GAS thread

With a suitable male/female reduction adapter the accessory can also be used with pumps with GAS 1¼" e GAS 1½" discharge ports

DAC-V 32÷50

COUPLERS

The bottom couplerwith vertical dischargeDAC-V is compact and rugged, suitable for installation in small pits. It allows the pump to be connected to the system and easily disconnected for servicing or storage even without draining the tank.
The two guide pipes accompany the pump into position without troublesome rotation. It can be completed with a 2" ball check valve for installation directly on the discharge.
With an adapter kit, the DAC-V vertical dischargebottom coupler can also be used with vertical discharge blue series pumps.
A special valve incorporated in the DAC's body expels any air pockets that may form when the pit water level drops below the priming threshold, ensuring the pump is able to operate normally.

DAC-V 65÷350

COUPLERS

DAC-V vertical dischargebottom couplers for use with pumps up to 1300 kg.
Fixing by means of sliding flange or hook [KGP] (discharge DN350) with double guide pipe. A PATENTED guide pipe connection system that reduces mechanical stresses and simplifies pump release.

To ensure sufficient intake and prevent cavitation, on some pump models with high-power motor it may be necessary to increase the distance between the intake port and the bottom of the tank.

Technical characteristics

Flanged models from DN65 to DN350 with or without expansion

Cast iron body

Cast iron sliding flange

Cast iron hook (for models with discharge DN350 only)

Two guide pipes of Ø2" (Ø3" for model with discharge DN350)

Stainless steel metal fasteners

Epoxy-vinyl paint

Full free passage

DAC-H

COUPLERS

DAC-H horizontal discharge bottom couplers are particularly compact, making them ideal for installations in tight spaces.

They have 2 guide pipes which can accompany the pump into its working position, preventing troublesome rotation. If the discharge direction has to be modified, the device can be connected to an ordinary 90° threaded bend.

DAC-R

COUPLERS

DAC-R vertical discharge bottom couplers in reinforced version for use with electric pumps weighing more than 1300 kg.
Fixing by means of sliding flange KAF (for models up to discharge DN250) or hook KGP with double guide pipe.
A patented guide pipe connection system that reduces mechanical stresses and simplifies pump release

To ensure sufficient intake and prevent cavitation, on some pump models with high-power motor it may be necessary to increase the distance between the intake port and the bottom of the tank.

DAC-X

COUPLERS

They allow installation of a completely stainless steel system for resistance to chemically aggressive liquids.

Technical characteristics

Flanged models from DN65 to DN100

Body and flange in AISI 316 stainless steel

NBR rubber gasket

Full free passage

Recommended for installations with corrosive or saline liquids

Reliability

For plants with large pipelines, Zenit has developed a range of reinforced couplers capable of supporting the weight of particularly heavy pumps.

They come complete with rugged mounting brackets of suitable size and an anchor system consisting of a cast iron hook fixed to a special provided on the pump body, instead of the usual sliding flange connected to the discharge port.